Double (formerly Keeper, rebranded October 2025) is practice-management and month-end close software for accounting and bookkeeping firms — transaction review, client queries, receipt management, AI bank feeds, and AI financial summaries — with two-way sync into each client’s QuickBooks Online or Xero. It is priced per connected client, roughly $10–$50/month across its Core, Plus, and Scale tiers, with unlimited team members.
The catch is that Double is a layer, not a ledger. Your client still pays for QuickBooks Online or Xero underneath (often $38+/client/month), so the firm pays Double on top of the accounting subscription it is reviewing — two bills per client.
HelloBooks is the ledger and the AI in one. The HelloBooks CPA Partner Program gives firms a full double-entry general ledger they operate for every client at $4.99/client/month with unlimited AI credits — so you replace the QuickBooks bill instead of stacking a review tool on top of it.